diff --git a/pyproject.toml b/pyproject.toml
index aaf46ab..379373c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "sora_sdk"
 authors = [{ name = "Shiguredo Inc.", email = "contact+pypi@shiguredo.jp" }]
-version = "2023.4.0.dev8"
+version = "2023.4.0.dev9"
 description = "WebRTC SFU Sora Python SDK"
 readme = "README.md"
 license = { file = "LICENSE" }
@@ -34,4 +34,4 @@ dev-dependencies = [
 
 [tool.ruff]
 line-length = 100
-indent-width = 4
\ No newline at end of file
+indent-width = 4